WASHINGTON, May 1 (Reuters) - The U.S. Treasury Department said on Monday that authorities took "decisive actions" in response to the failures of First Republic Bank, Silicon Valley Bank and Signature Bank, and remain committed to taking action to ensure that the banking system is safe and depositors feel secure.

"Today, the banking system remains sound and well capitalized, and we have even seen important signs of strength and stabilization across regional banks," Treasury's acting assistant secretary for economic policy, Eric Van Nostrand, said in a statement to the Treasury Borrowing Advisory Committee as the department released new borrowing estimates. (Reporting by David Lawder; Editing by Leslie Adler)